CN101770867A - Method of manufacturing electrolytic capacitor - Google Patents
Method of manufacturing electrolytic capacitor Download PDFInfo
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- CN101770867A CN101770867A CN201010002037A CN201010002037A CN101770867A CN 101770867 A CN101770867 A CN 101770867A CN 201010002037 A CN201010002037 A CN 201010002037A CN 201010002037 A CN201010002037 A CN 201010002037A CN 101770867 A CN101770867 A CN 101770867A
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- anode foils
- tunicle
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- 239000003990 capacitor Substances 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 239000011888 foil Substances 0.000 claims abstract description 91
- 229910052751 metal Inorganic materials 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims description 27
- 239000010955 niobium Substances 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 11
- 150000004706 metal oxides Chemical class 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 235000014347 soups Nutrition 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 229910052715 tantalum Inorganic materials 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 2
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 2
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- 229910001936 tantalum oxide Inorganic materials 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 22
- 238000005260 corrosion Methods 0.000 abstract description 22
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 17
- 238000012545 processing Methods 0.000 description 13
- 239000005030 aluminium foil Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 6
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 5
- 229910010413 TiO 2 Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000007784 solid electrolyte Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- DISHRDNUYGLDMW-UHFFFAOYSA-N 3,6-dioxocyclohexa-1,4-diene-1-carbonitrile methane Chemical compound C.C.O=C1C=CC(=O)C(=C1)C#N DISHRDNUYGLDMW-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0029—Processes of manufacture
- H01G9/0032—Processes of manufacture formation of the dielectric layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/07—Dielectric layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
- H01G9/151—Solid electrolytic capacitors with wound foil electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
As to each of a capacitor element employing an anode foil having a matrix made of a metal and a film, provided on the surface of the matrix, made of an oxide of a metal different from the metal of the matrix and a capacitor element employing an anode foil having a matrix made of a prescribed metal and a film of an oxide of the metal and a cathode foil having a matrix made of another metal different from the metal, formation treatment is performed on an end face of the anode foil exposing the surface of the metal forming the matrix by applying a positive voltage to an anode lead wire and applying a negative voltage to a cathode lead wire. Thus, an electrolytic capacitor resistant against corrosion or the like is obtained.
Description
Technical field
The present invention relates to a kind of manufacture method of electrolytic capacitor, relate in particular to the electrolytic capacitor that coiling anode foils and Cathode Foil etc. form.
Background technology
At present, use conductive polymer material such as polypyrrole, polythiophene, poly-furans or polyaniline or TCNQ complex salt (7,7,8,8-four cyano benzoquinone bismethane) to receive publicity as electrolytical electrolytic capacitor.At this, the manufacture method of such electrolytic capacitor is described.At first, by implementing the chemical method Treatment of Metal Surface, on the surface of aluminium foil, form alumina coating to aluminium foil.Then, the aluminium foil that will be formed with the tunicle of alumina foil cuts into the size of regulation, forms banded anode foils.In addition, other aluminium foils are cut into the size of regulation, form banded Cathode Foil.
Then, as shown in Figure 5, reel and cut into banded anode foils 103 and Cathode Foil 104 respectively and form capacitor element 102 by barrier paper 105,106 is set respectively.In the capacitor element 102 of having been reeled, outstanding across the positive wire 109 that lead-in wire corbel back slab (lead tabu) terminal 108 is electrically connected with anode foils 103, in addition, outstanding by the cathode leg 110 that lead-in wire corbel back slab terminal 108 is electrically connected with Cathode Foil 104.
Then, the damaged portion of the section (end face) of the anode foils 103 that the surface of aluminium is exposed or alumina coating implements to change into processing (end face processing) again.As shown in Figure 6, dipping capacitor element 102 in the soup of the regulation that in electrolytic bath 121, stores.Then, apply positive current potential, apply negative current potential, come to form the tunicle of aluminium oxide in the damaged portion of the section of anode foils 103 or alumina coating to electrolytic bath 121 by anode lead 109.
Then, implement temperature to capacitor element and be about 150 ℃～300 ℃ heat treatment, solid electrolyte is infiltrated in capacitor element 102.Then, as shown in Figure 7, sealing is installed on the capacitor element 102 that makes the solid electrolyte infiltration, it is contained in the aluminum hull (aluminium case) 111 with rubber washer (gum packing) 112.Then, implement willfully to enclose and (curl) processing of curling to the opening of aluminum hull 111.Then, finish electrolytic capacitor 101 by implementing etch processes.Wherein, the example as the document of the manufacture method that discloses this kind electrolytic capacitor comprises patent documentation 1.
Patent documentation 1: TOHKEMY 2000-277388 communique
Summary of the invention
As mentioned above, if the anode foils of electrolytic capacitor is in the past then utilized to change into processing at the surface of aluminium foil formation alumina coating.In recent years, electrolytic capacitor is needing high capacity.
Size and the realization high capacity of inventor in order not strengthen capacitor element, tunicle as anode foils, attempted the tunicle that the higher material of suitable dielectric constant replaces aluminium oxide, use is formed at the anode foils of aluminium foil with the dielectric tunicle of niobium oxide, tantalum oxide or titanium oxide, the trial-production electrolytic capacitor.
As a result, the inventor begins clearly: implement to change into processing (with reference to Fig. 6) if the capacitor element of suitable such anode foils impregnated in electrolytic bath again, corrosion then takes place on capacitor element or on the surface of capacitor element precipitate takes place.Especially as can be known corrosion etc. appears in part at the capacitor element of the opposition side of the side that connects lead terminal significantly.
The present invention is just in order to solve the invention that this time begins the problems referred to above point of distinguishing and propose, and its purpose is to provide a kind of manufacture method of the electrolytic capacitor that does not corrode etc.
The manufacture method of the electrolytic capacitor among the present invention possesses following operation.Coiling forms capacitor element as the metal oxide film of mother metal and metal that will be different with the metal of this mother metal as the anode foils of tunicle and Cathode Foil with the metal of regulation.Under the state of the soup that capacitor element be impregnated in the regulation that in electrolytic bath, stores, by applying positive voltage to the positive wire that is electrically connected with anode foils, applying the metal oxide film that end face that negative voltage comes the anode foils exposed at metallic surface forms this metal to the cathode wire that is electrically connected with Cathode Foil.
The manufacture method of other electrolytic capacitors among the present invention possesses following operation.Coiling with the 1st metal as mother metal and with the metal oxide film of the 1st metal as the anode foils of tunicle and 2nd metal different with the 1st metal as the Cathode Foil of mother metal and form capacitor element.Under the state of the soup that capacitor element be impregnated in the regulation that in electrolytic bath, stores, by applying positive voltage to the positive wire that is electrically connected with anode foils, apply negative voltage, come the end face of the anode foils exposed at the 1st metallic surface to form the operation of the 1st metal oxide film of the 1st metal to the cathode wire that is electrically connected with Cathode Foil.
If utilize the manufacture method of the electrolytic capacitor among the present invention, then go up in the operation that forms metal oxide film at the end face (or section) of anode foils, can prevent from capacitor element, to take place corrosion etc.
If utilize the manufacture method of other electrolytic capacitors among the present invention, then go up in the operation that forms the 1st metal oxide film at the end face (or section) of anode foils, can prevent from capacitor element, to take place corrosion etc.
Description of drawings
Fig. 1 is the stereogram of an operation of the manufacture method of the electrolytic capacitor of expression in the embodiments of the present invention.
Fig. 2 is the side view that is illustrated in the operation of carrying out in the identical execution mode after operation shown in Figure 1.
Fig. 3 is the side view that is illustrated in the operation of carrying out in the identical execution mode after operation shown in Figure 2.
Fig. 4 represents in the manufacture method of electrolytic capacitor in an embodiment of the present invention, the result's that the state of the capacitor element after end face is handled is estimated figure.
Fig. 5 is the stereogram of an operation of representing the manufacture method of electrolytic capacitor in the past.
Fig. 6 is the side view that is illustrated in the operation of carrying out after the operation shown in Figure 5.
Fig. 7 is the side view that is illustrated in the operation of carrying out after the operation shown in Figure 6.
Among the figure, the 1-electrolytic capacitor, the 2-capacitor element, the 3-anode foils, the 4-Cathode Foil, the 5-barrier paper, the 6-barrier paper, 7-ends winding, the 8-corbel back slab that goes between, 9-positive wire, 10-cathode wire, 11-aluminum hull, 12-sealing rubber washer, 21-electrolytic bath, 22-soup.
Embodiment
Manufacture method to the electrolytic capacitor in the embodiments of the present invention describes.At first, as the material that becomes anode foils, use evaporation niobium oxide-film (Nb on the surface of the aluminium foil that becomes mother metal
2O
5) as the material of oxide film thereon and on the surface of aluminium foil evaporation tantalum oxide-film (Ta
2O
5) material.In addition, as the material that becomes Cathode Foil, use at the surperficial evaporation titanium nitride of the aluminium foil that becomes mother metal as the material of tunicle with do not form the material of tunicle on the surface at aluminium foil.
Then, cut into the size of regulation, form banded anode foils by each material that will become anode foils.In addition, cut into the size of regulation, form banded Cathode Foil by each material that will become Cathode Foil.Then, as shown in Figure 1, reel and cut into banded anode foils 3 and Cathode Foil 4 respectively and form capacitor element 2 by barrier paper 5,6 is set.
Then, the end face that the damaged portion of the section (end face) of 3 grades of the anode foils in the capacitor element 2 or oxide film thereon is implemented to form oxide film thereon is handled (changing into processing).As shown in Figure 2, dipping capacitor element 2 in the soup 22 of the regulation that in electrolytic bath 21, stores.Then, apply positive current potential, apply negative current potential, on the surface of the aluminium that the damaged portion of the section of anode foils 3 grades or oxide film thereon is exposed, form the tunicle of aluminium oxide to cathode wire 10 by anode lead 9.
Then, implement temperature to capacitor element and be about 150 ℃～300 ℃ heat treatment, solid electrolyte is infiltrated in capacitor element 2.Then, as shown in Figure 3, sealing is installed on the capacitor element 2 that makes the solid electrolyte infiltration, it is contained in the aluminum hull 11 with rubber washer 12.Then, implement willfully to enclose (Heng Twisted り to the opening of aluminum hull 11) and the processing of curling.Then, finish electrolytic capacitor 1 by implementing etch processes.
[embodiment]
Distinguished following result: if be above-mentioned manufacture method, then in end face is handled, applying negative voltage by cathode wire, thereby applying under the negative voltage condition, can be suppressed at the corrosion or the precipitate that take place on the capacitor element significantly to electrolytic bath to capacitor element.Its evaluation result is described.
To be expression estimate result's the figure of the state of the capacitor element after end face is handled to the capacitor element that utilizes above-mentioned method and make and the capacitor element that utilizes manufacture method in the past to make to Fig. 4.The sample number of estimating is 30.
As shown in Figure 4, if be sample 1 (anode foils: Nb
2O
5/ Al, Cathode Foil: TiN/Al),, then do not boost if then apply negative voltage (comparative example) to electrolytic bath, relative therewith, if apply negative voltage (example) to cathode wire, the capacitor element of corrosion etc. has not then taken place.In addition, if be sample 2 (anode foils: Nb
2O
5/ Al, Cathode Foil: no tunicle/Al), if then apply negative voltage (comparative example) to electrolytic bath, then corrosion etc. has taken place in 26 samples in 30, and is relative therewith, if apply negative voltage (example) to cathode wire, the capacitor element of corrosion etc. has not then taken place.
If be sample 3 (anode foils: Ta
2O
5/ Al, Cathode Foil: TiN/Al),, then do not boost if then apply negative voltage (comparative example) to electrolytic bath, relative therewith, if apply negative voltage (example) to cathode wire, the capacitor element of corrosion etc. has not then taken place.In addition, if be sample 4 (anode foils: Ta
2O
5/ Al, Cathode Foil: no tunicle/Al), if then apply negative voltage (comparative example) to electrolytic bath, then corrosion etc. has taken place in 14 samples in 30, and is relative therewith, if apply negative voltage (example) to cathode wire, the capacitor element of corrosion etc. has not then taken place.Wherein, expression " tunicle/mother metal " in each bracket.
Proved conclusively as drawing a conclusion: if be the capacitor element of anode foils of the tunicle that as the anode foils of this sample 1～sample 4, uses the oxide-film that has formed the metal different with the metal of its mother metal, implement the end face processing if then apply negative voltage to electrolytic bath, corrosion etc. has then taken place on capacitor element, relative therewith, implement the end face processing by apply negative voltage to cathode wire, corrosion etc. does not take place on capacitor element.In addition, also distinguished following result: under the situation that corrosion has taken place, situation that precipitate is separated out or the situation of not boosting, the oxide film thereon (aluminium oxide) that should form on the end face of anode foils normally forms.
In addition, except sample 1～sample 4, the inventor is also to sample 5 (anode foils: TiO
2/ Al, Cathode Foil: TiN/Al) with sample 6 (anode foils: TiO
2/ Al, Cathode Foil: do not have tunicle/Al) carried out identical evaluation, proved conclusively by apply negative voltage to cathode wire and implemented end face and handle, corrosion etc. takes place on capacitor element.
And then except sample 1～sample 6, the inventor is also to sample 7 (anode foils: Nb
2O
5/ Nb, Cathode Foil: TiN/Al), sample 8 (anode foils: Nb
2O
5/ Nb, Cathode Foil: do not have tunicle/Al), sample 9 (anode foils: Ta
2O
5/ Ta, Cathode Foil: TiN/Al), sample 10 (anode foils: Ta
2O
5/ Ta, Cathode Foil: do not have tunicle/Al), sample 11 (anode foils: TiO
2/ Ti, Cathode Foil: TiN/Al), sample 12 (anode foils: TiO
2/ Ti, Cathode Foil: do not have tunicle/Al), sample 13 (anode foils: Al
2O
3/ Nb, Cathode Foil: TiN/Al), sample 14 (anode foils: Al
2O
3/ Nb, Cathode Foil: do not have tunicle/Al),, estimate the state of the capacitor element after end face is handled to utilizing capacitor element that above-mentioned method makes and the capacitor element that utilizes manufacture method in the past to make.
Results verification following result: implement end face and handle if apply negative voltage to electrolytic bath, as seen the sample of corrosion etc. has then taken place on capacitor element, relative therewith, implement the end face processing by apply negative voltage to cathode wire, corrosion etc. does not take place in capacitor element.
Proved conclusively as drawing a conclusion: though as this sample 7～sample 14, use will regulation metal as mother metal and with the metal oxide film of this metal as in the anode foils of tunicle and the capacitor element of other metals that will be different as the Cathode Foil of mother metal with this metal, implement the end face processing if then apply negative voltage to electrolytic bath, corrosion etc. has then taken place on capacitor element, relative therewith, implement the end face processing by apply negative voltage to cathode wire, corrosion etc. does not take place on capacitor element.
In addition,, form under the situation of oxide film thereon (dielectric tunicle) applicable Al, Nb, Ta and Ti or include their alloy by implementing to change into to handle to mother metal as the mother metal that constitutes anode foils.On the other hand, utilizing evaporation to form under the situation of dielectric tunicle, the mother metal of antianode is not particularly limited.Method as forming this dielectric tunicle is included in after any one metal of evaporating Al, Nb, Ta and Ti, by implementing to change into the method for handling this metal of oxidation.Perhaps, but the also oxide film thereon of the oxide film thereon of the oxide film thereon of evaporating Al, Nb and Ta.Wherein, the material of target paper tinsel is not particularly limited.
In addition, the inventor has proved conclusively following result: for decent product 15 (anode foils: Al
2O
3/ Al, Cathode Foil: do not have tunicle/Al) or sample 16 (anode foils: Al
2O
3/ Al, Cathode Foil: implement corrosion etc. was handled, also do not taken place to end face on capacitor element sample even TiN/Al) like that apply negative voltage to electrolytic bath, implement the end face processing even apply negative voltage, corrosion etc. does not take place on capacitor element yet to cathode wire.
This time disclosed execution mode is an illustration only, is not limited by it.The present invention represents by the scope of claim by the scope of above-mentioned explanation, in all being comprised in all changes of the meaning of the scope equalization of claim and scope.
Claims (4)
1. the manufacture method of an electrolytic capacitor is characterized in that, possesses:
Coiling with the metal of regulation as the metal oxide film of mother metal and metal that will be different anode foils and Cathode Foil as tunicle with the described metal of described mother metal, thereby form the operation of capacitor element; And
Under the state of the soup that described capacitor element be impregnated in the regulation that in electrolytic bath, stores, by applying positive voltage to the positive wire that is electrically connected with described anode foils, applying the operation that end face that negative voltage comes the described anode foils exposed at described metallic surface forms the metal oxide film of described metal to the cathode wire that is electrically connected with described Cathode Foil.
2. the manufacture method of electrolytic capacitor according to claim 1, wherein,
The described metal of described mother metal is an aluminum or aluminum alloy,
Described tunicle is any one tunicle in titanium oxide, niobium oxide and the tantalum oxide.
3. the manufacture method of an electrolytic capacitor wherein, possesses:
Coiling with the 1st metal as mother metal and with the metal oxide film of described the 1st metal as the anode foils of tunicle and the 2nd metal that will be different with described the 1st metal as the Cathode Foil of mother metal and form the operation of capacitor element;
Under the state of the soup that described capacitor element be impregnated in the regulation that in electrolytic bath, stores, by applying positive voltage to the positive wire that is electrically connected with described anode foils, applying the operation that end face that negative voltage comes the described anode foils exposed at described the 1st metallic surface forms the 1st metal oxide film of described the 1st metal to the cathode wire that is electrically connected with described Cathode Foil.
4. the manufacture method of electrolytic capacitor according to claim 3, wherein,
Any one metal that described the 1st metal is titanium, niobium and tantalum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009001610A JP5261199B2 (en) | 2009-01-07 | 2009-01-07 | Electrolytic capacitor manufacturing method |
| JP2009-001610 | 2009-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101770867A true CN101770867A (en) | 2010-07-07 |
Family
ID=42310746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010002037A Pending CN101770867A (en) | 2009-01-07 | 2010-01-07 | Method of manufacturing electrolytic capacitor |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7846218B2 (en) |
| JP (1) | JP5261199B2 (en) |
| CN (1) | CN101770867A (en) |
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| CN107331518A (en) * | 2017-08-11 | 2017-11-07 | 佛山市三水日明电子有限公司 | The manufacture method of solid electrolyte/aluminum electrolytic capacitor |
| CN107331517A (en) * | 2017-08-11 | 2017-11-07 | 佛山市三水日明电子有限公司 | The manufacturing process of solid electrolyte/aluminum electrolytic capacitor |
| CN107369569A (en) * | 2017-08-11 | 2017-11-21 | 佛山市三水日明电子有限公司 | A kind of formation device of solid electrolyte/aluminum electrolytic capacitor |
| CN107424844A (en) * | 2017-08-11 | 2017-12-01 | 佛山市三水日明电子有限公司 | A kind of formation device of polymer solid aluminum electrolytic capacitor |
| CN107578923A (en) * | 2017-08-11 | 2018-01-12 | 佛山市三水日明电子有限公司 | A kind of formation device of aluminium electrolutic capacitor |
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| JP6775178B2 (en) * | 2016-03-17 | 2020-10-28 | パナソニックＩｐマネジメント株式会社 | Manufacturing method of electrolytic capacitors |
| JP6735510B2 (en) * | 2016-03-25 | 2020-08-05 | パナソニックＩｐマネジメント株式会社 | Electrolytic capacitor |
| WO2019167773A1 (en) * | 2018-02-28 | 2019-09-06 | パナソニックＩｐマネジメント株式会社 | Electrode foil for electrolytic capacitor, electrolytic capacitor, and methods for manufacturing same |
Citations (4)
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| JP2000277388A (en) | 1999-03-24 | 2000-10-06 | Sanyo Electric Co Ltd | Manufacture for solid electrolytic capacitor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331518A (en) * | 2017-08-11 | 2017-11-07 | 佛山市三水日明电子有限公司 | The manufacture method of solid electrolyte/aluminum electrolytic capacitor |
| CN107331517A (en) * | 2017-08-11 | 2017-11-07 | 佛山市三水日明电子有限公司 | The manufacturing process of solid electrolyte/aluminum electrolytic capacitor |
| CN107369569A (en) * | 2017-08-11 | 2017-11-21 | 佛山市三水日明电子有限公司 | A kind of formation device of solid electrolyte/aluminum electrolytic capacitor |
| CN107424844A (en) * | 2017-08-11 | 2017-12-01 | 佛山市三水日明电子有限公司 | A kind of formation device of polymer solid aluminum electrolytic capacitor |
| CN107578923A (en) * | 2017-08-11 | 2018-01-12 | 佛山市三水日明电子有限公司 | A kind of formation device of aluminium electrolutic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5261199B2 (en) | 2013-08-14 |
| US20100170070A1 (en) | 2010-07-08 |
| JP2010161151A (en) | 2010-07-22 |
| US7846218B2 (en) | 2010-12-07 |
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